Fuel Issues Blues..

Foose04 · 02-19-2013, 02:55 PM

Well i'm still working on this issue. Started with the walbro 400's dying because of e85. Next I have 450's rated for e85, but still well short on fuel compared to what I used to have on my setup.

I ordered a Autometer 0-100 psi sensor to log pressure and new fuel filter.

The fuel filer was (4+ years old)

, would this be enough to cause lean out up top? It's a Jegs 5" filter, rater at 1000HP for alcohol. 100 Micron.

Next up is remove the KB boost a pump to see if it's not feeding these 450 properly. Thoughts?

I tried base FP from 55psi to 70psi, all seems bring the same results, 100 duty cycle and lean she goes above 5k.

02-19-2013, 02:55 PM	#1
Foose04 Senior Member Join Date: Feb 2010 Posts: 965	Fuel Issues Blues.. Well i'm still working on this issue. Started with the walbro 400's dying because of e85. Next I have 450's rated for e85, but still well short on fuel compared to what I used to have on my setup. I ordered a Autometer 0-100 psi sensor to log pressure and new fuel filter. The fuel filer was (4+ years old) , would this be enough to cause lean out up top? It's a Jegs 5" filter, rater at 1000HP for alcohol. 100 Micron. Next up is remove the KB boost a pump to see if it's not feeding these 450 properly. Thoughts? I tried base FP from 55psi to 70psi, all seems bring the same results, 100 duty cycle and lean she goes above 5k. __________________ 12 GMC Denali HD: 4x4, 12" Bullet Proof, 24x12 American Forces, 40x15.50 Toyo M/T's, h&s mini max, deleted, 5" axle dump, S&B intake,tractions bars, air bags. 04 GMC 1500RST: TMS Iron 347/S480/4l80E - 9.63@143.22 05 GMC 2500HD: LLY@372HP/669TQ, 4x4, 8" FabTech, 4.56 gears & 37" Toyo M/T's